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EP0792127B1 - Prothese d'articulation - Google Patents

Prothese d'articulation Download PDF

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Publication number
EP0792127B1
EP0792127B1 EP95936961A EP95936961A EP0792127B1 EP 0792127 B1 EP0792127 B1 EP 0792127B1 EP 95936961 A EP95936961 A EP 95936961A EP 95936961 A EP95936961 A EP 95936961A EP 0792127 B1 EP0792127 B1 EP 0792127B1
Authority
EP
European Patent Office
Prior art keywords
joint
shaft
bore
prosthesis according
joint prosthesis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95936961A
Other languages
German (de)
English (en)
Other versions
EP0792127A1 (fr
Inventor
Günter Lob
Hans-Joachim Fischer
Gerd Steür
Curt Kranz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Biomet Deutschland GmbH
Original Assignee
Biomet Merck Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Biomet Merck Deutschland GmbH filed Critical Biomet Merck Deutschland GmbH
Publication of EP0792127A1 publication Critical patent/EP0792127A1/fr
Application granted granted Critical
Publication of EP0792127B1 publication Critical patent/EP0792127B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/74—Devices for the head or neck or trochanter of the femur
    • A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
    • A61B17/744—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck the longitudinal elements coupled to an intramedullary nail
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary pins, nails or other devices
    • A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
    • A61B17/725—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with locking pins or screws of special form
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
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    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
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    • A61B17/72—Intramedullary pins, nails or other devices
    • A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
    • A61B17/7241—Intramedullary pins, nails or other devices with special means of locking the nail to the bone the nail having separate elements through which screws pass
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/3662—Femoral shafts
    • A61F2/3672—Intermediate parts of shafts
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/3676—Distal or diaphyseal parts of shafts
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30205—Three-dimensional shapes conical
    • A61F2002/3021—Three-dimensional shapes conical frustoconical
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
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    • A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
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Definitions

  • the invention relates to a modular joint prosthesis in the preamble of Claim 1 specified type.
  • Such stem prostheses are manufactured in different shapes and sizes, to ensure optimal care for each patient.
  • WO 85/05027 is an artificial joint system, especially a hip prosthesis for cementless implantation is known which a shaft part which can be introduced into the thigh of the patient and has a joint connecting element connected to this shaft part.
  • a threaded sleeve is provided, in which the Joint connection element is screwed in, the longitudinal axis of the shaft part and the longitudinal axis of the hinge connection element are inclined towards each other.
  • the joint connecting element has a threaded pin, which at its proximal end with a conical shaft part for receiving the joint ball connected is. The screwing process is complete when the conical shaft part of the joint connecting element firmly on the one prepared for implantation proximal area of the femur rests.
  • the invention lies Task based on a modular hip prosthesis stem of the aforementioned To create genus, its constructive structure in a particularly simple manner it is also possible to replace sub-elements in the joint area by one To allow adaptation to different advanced disease states.
  • the invention includes the knowledge that to preserve the natural joint ball in the case of a modular prosthesis, an additional, alternatively applicable head part is cheap, which with a bone screw in the direction of the neck Joint ball is provided, which can be screwed into the separated natural joint ball is. This allows the joint with its natural parts joint ball / socket if necessary, be retained for a long time. The headboard can then later possibly with almost no strain on the patient's bone and without loosening the seat of the prosthesis socket with little effort be replaced.
  • the prosthesis shown can initially also replace a conventional hip screw, as in the case of fractures in the Femur area are often used. A later reoperation is then so far simplified than just the head part of the modular stem prosthesis against one must be exchanged with an artificial joint ball in order to get another Obtain full denture.
  • the modularly designed hip prosthesis according to the invention has a joint connection element and shaft part formed individual elements, which preferably by joining their proximal or distal ends together get connected.
  • the hinge connection element is used to produce a secure Connection between the prosthetic socket and the hip joint.
  • the modular hip joint shaft can be adapted to the respective anatomical Conditions the hinge connector without special Use of force changed in its position and then again easily be securely attached.
  • the measures according to the invention are obtained while preserving the natural joint head advantageously a correction of the position of the joint connecting element to adapt to the special anatomical conditions of the Patients (e.g. a relatively small axial displacement in the direction of the neck) possible during the implantation process.
  • connection of the modular elements with each other even after the duration of the implantation Post surgery can be solved with little effort if this is out medical point of view, for example, to exchange or readjust the Joint connection element, is required.
  • Conventional connections stick on the other hand, often so firmly together that when disassembly is necessary Disadvantage of the patient damage to the thigh bone or at least an undesired loosening of the end part can often not be avoided.
  • the purpose is to further simplify the adaptation of an already implanted prosthesis changed patient anatomical conditions a separation of the Head part carrying the joint connecting element from that in the thigh bone located end part can make without the end part of an additional, the subject to firm seating of the implant, which can impair mechanical stress -
  • the cylindrical channel in the head part of the modular joint prosthesis as Threaded bore formed. The diameter of this threaded hole is larger than the diameter of the threaded hole in the end part receiving the tie rod.
  • a diameter ratio in the range of 1.5 to 2.5 ensures that on the proximally provided, frustoconical end of the end part substantially circular section of the top surface of the truncated cone as an abutment for a screw bolt is available, which after removing the tie rod can be screwed into the headboard.
  • the bolt screwed into the headboard is supported on the abutment and generates a further screw movement axial compressive force, which is the (despite the lack of tie rod) fixed conical connector between head and end part so far that the head part is for the purpose Exchange removed or with respect to the end part to the desired extent whose truncated cone-shaped pin provided at the proximal end is pivoted can be.
  • this extends for the screw provided thread in the head part of the modular joint prosthesis over the entire length of the existing cylindrical channel.
  • a metric thread is provided at the proximal end of the end portion.
  • the thread of the threaded hole in the head part has a smaller pitch on than the thread at the proximal end of the end part and thereby facilitates this Generate the necessary to loosen the fixed conical connector Compressive force by the bolt.
  • the proximal end has of the threaded bore provided in the end part has a recess, which in more favorable than chamfer arranged symmetrically to the longitudinal axis of the bore is trained.
  • the Generate the for releasing the conical connector between the head and Shaft part required compressive force a deformation of the first threads avoided. A deformed thread would have to be screwed on again Tie rod in the proximal end of the end piece after adjusting or replacing the Make headboard impossible.
  • the hinge connection element as an inclined to the longitudinal axis of the shaft part at the proximal end arranged through channel insertable and through there Holding means formed in different positions fixable part.
  • the hinge connection element as an inclined to the longitudinal axis of the shaft part at the proximal end arranged through channel insertable and through there Holding means formed in different positions fixable part.
  • the holding means are designed such that they have a radial expansion of the cross section of the section of the joint connecting element inserted into the shaft part Enable as a spreading agent for jamming and thus without any special Force can be activated.
  • a through channel a cylindrical bore is provided.
  • the one inserted into the through hole The area of the shaft of the joint connecting element has the shape of a Direction of the longitudinal axis slotted sleeve, so that by screwing one conical threaded bolt a spreading of the sleeve can be reached and thus a Secure positive and non-positive connection between the shaft part and the joint connection element arises.
  • connection between the shaft part and the joint connecting element can be detached in a favorable manner and can be replaced or Correction of the joint connection means possible.
  • This ensures a simplified Adaptation of the joint prosthesis to the respective patient-specific anatomical Conditions.
  • a subsequent replacement of the fastener can be done without a special mechanical load on the part of the hip prosthesis shaft located in the thigh bone, which in the worst case lead to an irreversible loosening of the shaft part can.
  • the joint connection element as a bone screw trained, which is used when the The femur is damaged, but the natural joint ball is worth preserving.
  • the shaft part into a ball bearing the artificial joint Head part and a neck part separable, the two sub-elements assembled using a conical connector are.
  • Corresponding conical connector can also be found in the Sub-elements of the modular shaft assembly application, this in the longitudinal direction by a tie rod or secured or set a screw connection can be, which - through an additional axial channel guided in the head part - in a lying on the same axis Threaded hole can be screwed into the end part of the shaft is.
  • the patient a separation of the joint connector wearing head part of the one in the thigh bone to be able to make located end part without the End part of an additional, the tight fit of the implant subject to impairing mechanical stress, is in accordance with a favorable development of the invention
  • the cylindrical channel in the head part of the modular joint prosthesis designed as a threaded hole. The diameter this threaded hole is larger than the diameter the threaded hole in the end part that receives the tie rod.
  • a diameter ratio in the range of 1.5 to 2.5 ensures that on the proximally provided, frustoconical End of the end part of a substantially circular Section of the top surface of the truncated cone as an abutment is available for a bolt, which screwed into the head part after removing the tie rod can be.
  • the one screwed into the headboard Bolt is supported on the abutment and generates further screwing an axial compressive force, which the fixed conical connector (despite the lack of a tie rod) between head and end part so far that the head part removed for replacement or regarding the end part to the desired extent on the proximal end provided, frusto-conical pins are pivoted can.
  • the thread intended for the screw bolt in the head part of the modular joint prosthesis total length of the existing cylindrical channel.
  • a metric thread is provided at the end part.
  • the thread of the threaded hole in the head part is less Pitch as the thread at the proximal end of the end part and thereby facilitates the generation of the Loosen the fixed conical connector required Compressive force by the bolt.
  • the proximal end of the threaded bore provided in the end part a recess, which is convenient as arranged symmetrically to the longitudinal axis of the bore Chamfer is formed.
  • the free end also is chamfered at the same angle when supporting on the proximal end of the end part not with the Thread of the threaded hole provided in this area can come into active contact.
  • This will create to loosen the conical connector between the head and shaft part required compressive force a deformation avoided the first threads.
  • a deformed one Thread would screw the tie rod in again the proximal end of the end portion after fitting or replacement of the headboard impossible.
  • the modular joint prosthesis 1 shown in FIG. 1 consists of a shaft part 2 and a head part 3, each of which has a profile in the longitudinal direction.
  • the head part 3 carries the articulation means designed as a bone screw 3.1, through which the connection of the joint prosthesis 1 with the Hip joint can be produced.
  • the longitudinal axes of the hinge connection element 3.1 and of the prosthesis shaft 1 enclose an angle of approximately 135 °.
  • the connection between the head part 3 and the joint connection element 3.1 takes place both form and a force fit.
  • the sub-elements 2 and 3 of the shaft 1 are by means of a conical connector 10 lying on the same axis and pivotally connected to each other.
  • a tie rod (not shown) is provided to prevent axial loosening, which through the channel 5 formed as a threaded bore of the head part 3 guided and in the formed as a threaded bore 6 proximal area of the Shaft part 2 provided channel 4 is screwed. The screwing takes place so far that the proximal end of the tie rod is supported in the recess 7 and the individual parts 2 and 3 of the modular joint prosthesis 1 axially against one another are moved until the conical connector 10 has the desired strength having.
  • the conical plug connection 10 In order to be able to change the position of the head part 3 with the articulation connection element 3.1 with respect to the shaft part 2 by pivoting or to replace the head part 3, the conical plug connection 10 must be released again. After loosening and unscrewing the tie rod (not shown), a screw bolt (also not shown) is screwed into the threaded bore 5 of the head part 3.
  • the screw bolt Since the diameter D 1 of the threaded bore 5 in the head part 3 has a greater value than the diameter D 2 of the proximal, threaded portion 6 of the central bore 4 of the shaft part 2, the screw bolt is supported on a surface dimension by the diameter -Difference D 1 - D 2 defined circular ring on the top surface 8 of the proximal end of the head part 3, which is designed as a truncated cone, and is thus able to generate an axially directed compressive force.
  • This force releases the conical plug connection 10, which is very firm due to the action of the tie rod, and enables the joint prosthesis 1 to be adapted to changed physical conditions of a patient in a convenient manner.
  • FIGS 2 and 3 are advantageous embodiments of hinge connection elements 3.1, 3.2 shown schematically as a partial section.
  • Thread 18 facing away from the sleeve-shaped end of the bone screw 3.1 as well the cylindrical hollow pin of the ball-and-socket joint joint element 17 3.2 are provided with a slot 13.
  • the walls of the Slot 13 are through a (not shown) bolt, which - in the threaded bore 15 screwed - on the wall of the conical recess 14 supports, spreadable, so that there is an increase in diameter.
  • the related on the longitudinal axes 12.1 and 12.2 of the joint connecting elements 3.1 and 3.2 inclined bore 16 allows the operation of the (not shown) Tie rod or screw bolt (not shown) for connecting or Separate the individual parts 2 and 3 of the modular joint prosthesis 1.
  • the detail E shown in FIG. 4 according to FIG. 1 shows an advantageous one Development of the invention.
  • a chamfer trained recess 11 is provided at the proximal end of the threaded hole as a chamfer trained recess 11 is provided.
  • the inclination of the flanks 12 is 45 ° with respect to the longitudinal axis 11 and corresponds to the slope of the bevel on Threaded end of the bolt (not shown). This can be an optimal Force input into the end part 2 to loosen the conical connector 10 between end part 2 and head part 3 with relatively little force enable.
  • the grading of the thread diameter according to the invention can also between different successive elements may be provided. This makes it possible, for example, not only to separate - if desired between the head part and the shaft part following in the direction distally, but also between parts of the shaft. For a targeted "Dialing" a connection to disconnect would then have to towards the head end a gradually increasing thread diameter can be selected, whose external thread comes into engagement with the internal thread, which is in the shaft element located on the proximal side of the intended separation point located. He then leans on the edge with the edge of his end the hole of the distally adjacent element and separates the selected one Connection.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Transplantation (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Neurology (AREA)
  • Vascular Medicine (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)

Claims (14)

  1. Prothèse articulaire (1), comprenant une partie de fût (2), susceptible d'être mise en place dans un os long et comportant un perçage longitudinal (4), et une partie de tête (3) qui s'y raccorde de façon proximale, avec un élément de raccord articulaire (3.1, 3.2) monté en translation longitudinale dans cette partie de tête, les axes longitudinaux de la partie de fût (2) et de la partie de raccord articulaire (3.1, 3.2) formant un angle obtus, dit angle d'inversion, et la partie de tête (3) comporte une zone en forme de douille, qui présente un perçage traversant incliné sensiblement sous l'angle d'inversion par rapport à l'axe du fût (11) et adapté à la section transversale du fût (20) de l'élément de raccord articulaire (3.1, 3.2) susceptible d'être enfilé dans ce perçage, caractérisée en ce que la partie de tête (3) présente un perçage axial (5) qui s'étend en direction de la partie de fût (2) et qui traverse l'élément de raccord articulaire (3.1, 3.2) monté dans la partie de tête (3).
  2. Prothèse articulaire selon la revendication 1, caractérisée en ce que le perçage (5) est pourvu d'un pas de vis pour un organe de vissage servant à détacher la jonction d'enfichage avec la partie de fût respective suivante, le diamètre (D1) du perçage (5) étant supérieur au diamètre (D2) d'un perçage (4) ménagé dans la partie de fût suivante.
  3. Prothèse articulaire selon l'une ou l'autre des revendications 1 et 2, caractérisée en ce que le rapport entre le diamètre (D1) du perçage (5) dans la partie de tête (3) et le diamètre (D2) du perçage dans la partie de fût suivante a une valeur dans la plage de 1,5 à 2,5.
  4. Prothèse articulaire selon l'une ou l'autre des revendications 2 et 3, caractérisé en ce que le pas de vis dans le perçage (5) ménagé dans la partie de tête (3) ou dans la partie de fût (2) qui précède en direction proximale s'étend sur la totalité de sa longueur.
  5. Prothèse articulaire selon l'une des revendications précédentes, caractérisée en ce que le perçage (4) prévu dans la partie de fût (2) suivante n'est pourvu d'un pas de vis que dans la région de son extrémité proximale (6).
  6. Prothèse articulaire selon la revendication 5, caractérisée en ce que l'extrémité proximale du perçage à pas de vis (6) de la partie de fût (2) suivante comporte un chanfrein (11).
  7. Prothèse articulaire selon l'une ou l'autre des revendications 1 et 2, caractérisée en ce que l'élément de raccord articulaire (3.1, 3.2) est monté de manière à pouvoir être arrêté avec son fût (30) dans la région en forme de douille de la partie de tête (3).
  8. Prothèse articulaire selon la revendication 7, caractérisée en ce que le fût (20) de l'élément de raccord articulaire (3.1, 3.2), qui traverse la partie de tête (3), est susceptible d'être expansé par des moyens d'écartement en vue de son arrêt.
  9. Prothèse articulaire selon la revendication 8, caractérisée en ce que le fût (20) est réalisé au moins partiellement sous la forme d'une douille susceptible d'être écartée, dotée de fentes (13) qui s'étendent en direction longitudinale.
  10. Prothèse articulaire selon la revendication 9, caractérisée en ce que, pour l'écartement de la région fendue de l'élément de raccord articulaire (3.1, 3.2), il est prévu un goujon vissé avec une zone qui va en se rétrécissant vers l'extrémité de son fût.
  11. Prothèse articulaire selon l'une des revendications précédentes, caractérisée en ce que l'élément de raccord articulaire est réalisé sous la forme de vis à os (3.1) ou sous la forme de bille articulaire (3.2).
  12. Prothèse articulaire selon la revendication 11, caractérisée en ce que la bille articulaire est susceptible d'être assemblée avec la partie de tête (3) au moyen d'une liaison à enfichage conique.
  13. Jeu de composants pour réaliser une prothèse articulaire selon l'une ou l'autre des revendications 1 et 2, caractérisé par une série de parties de tête (3) de différentes longueurs et/ou de différents diamètres, ainsi qu'une série de parties de fût (2) de longueurs différentes, de diamètres différents ou de courbures différentes.
  14. Jeu de composants selon la revendication 13, caractérisé en ce que l'on prévoit pour les parties de tête (3) un diamètre dans la plage de 12 à 17 mm, et pour les parties de fût (2) une plage de longueurs de 200 à 320 mm et une plage en diamètre de 10 à 14 mm.
EP95936961A 1994-11-19 1995-11-20 Prothese d'articulation Expired - Lifetime EP0792127B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4442206 1994-11-19
DE4442206A DE4442206A1 (de) 1994-11-19 1994-11-19 Gelenkprothese
PCT/DE1995/001642 WO1996015737A1 (fr) 1994-11-19 1995-11-20 Prothese d'articulation

Publications (2)

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EP0792127A1 EP0792127A1 (fr) 1997-09-03
EP0792127B1 true EP0792127B1 (fr) 2002-01-02

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EP95936961A Expired - Lifetime EP0792127B1 (fr) 1994-11-19 1995-11-20 Prothese d'articulation

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US (1) US5888206A (fr)
EP (1) EP0792127B1 (fr)
JP (1) JP3548578B2 (fr)
AT (1) ATE211376T1 (fr)
AU (1) AU3922695A (fr)
DE (2) DE4442206A1 (fr)
DK (1) DK0792127T3 (fr)
WO (1) WO1996015737A1 (fr)

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Also Published As

Publication number Publication date
DK0792127T3 (da) 2002-04-22
US5888206A (en) 1999-03-30
JPH10508777A (ja) 1998-09-02
JP3548578B2 (ja) 2004-07-28
AU3922695A (en) 1996-06-17
ATE211376T1 (de) 2002-01-15
WO1996015737A1 (fr) 1996-05-30
DE59509981D1 (de) 2002-02-07
DE4442206A1 (de) 1996-05-23
EP0792127A1 (fr) 1997-09-03

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